LAST ONE - SOG Ultra XR-XHP Folding Knife 2.8 Clip Point Carpenter CTS XHP Alloy Steel Black Blade Carbon Fiber Handle Black. Blade Steel Carpenter CTS XHP Alloy Steel. A forged carbon fiber handle with Titanium Nitride coated blade provides the SOG Ultra XR-XHP Folding Knife with an upgrade to the next level, especially in a much-requested blackout finish.